The Samsung 990 PRO 2TB outperforms the WD Black SN850X 2TB by 150-300 MB/s in sequential transfers and maintains higher speeds during sustained writes according to Tom's Hardware and AnandTech benchmarks. The SN850X counters with better value and Game Mode 2.0 for gamers, but trails in endurance consistency per real-world tests from Notebookcheck. Overall the 990 PRO wins for performance-criti...